| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
A transistor to an electronic circuit is like a _______________ to a house?
driveway |
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no trespassing sign |
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safe |
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gate |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor. A transistor acts as a gate or switch for electronic signals.
This circuit component symbol represents a(n):
capacitor |
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AC source |
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DC source |
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transformer |
Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.
Resistance is measured in:
volts |
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ohms |
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amperes |
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coulombs |
Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.
The diameter of a number 12 wire is __________ the diameter of a number 6 wire?
more than |
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double |
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less than |
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triple |
The larger the number the smaller the diameter of the wire. So, the diameter of a number 12 wire is less than the diameter of a number 6 wire.
In an electronic circuit, a thermocouple can be used to:
increase or decrease the temperature of a component in the circuit |
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keep the circuit at a designated safe temperature |
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open or close a circuit at a designated temperature |
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link the temperature of one component in the circuit to that of another component in the circuit |
A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them and can be used like a switch to open or close the circuit at a designated temperature.